Temperature Controls Guest Uptake and Release from Zn4L4 Tetrahedra.
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Zhang, Dawei https://orcid.org/0000-0002-0898-9795
Ronson, Tanya K
Güryel, Songül
Thoburn, John D
Wales, David J
Abstract
We report the preparation of triazatruxene-faced tetrahedral cage 1, which exhibits two diastereomeric configurations (T1 and T2) that differ in the handedness of the ligand faces relative to that of the octahedrally coordinated metal centers. At lower temperatures, T1 is favored, whereas T2 predominates at higher temperatures. Host-guest studies show that T1 binds small aliphatic guests, whereas T2 binds larger aromatic molecules, with these changes in binding preference resulting from differences in cavity size and degree of enclosure. Thus, by a change in temperature the cage system can be triggered to eject one bound guest and take up another.
Description
Keywords
3403 Macromolecular and Materials Chemistry, 34 Chemical Sciences
Journal Title
Journal of the American Chemical Society
Conference Name
Journal ISSN
0002-7863
1520-5126
1520-5126
Volume Title
Publisher
American Chemical Society
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All rights reserved
Sponsorship
European Research Council (695009)
Engineering and Physical Sciences Research Council (EP/M008258/1)
Engineering and Physical Sciences Research Council (EP/N035003/1)
Engineering and Physical Sciences Research Council (EP/M008258/1)
Engineering and Physical Sciences Research Council (EP/N035003/1)
This work was supported by the European Research Council (695009) and the UK Engineering and Physical Sciences Research Council (EPSRC EP/M008258/1). The authors thank the Department of Chemistry NMR Facility at the University of Cambridge for performing some NMR experiments and the EPSRC UK National Mass Spectrometry Facility at Swansea University for carrying out high-resolution mass spectrometry. D.Z. acknowledges a Herchel Smith Research Fellowship from the University of Cambridge. J.D.T. acknowledges the Rashkind Family Endowment and the Chenery Endowment from Randolph-Macon College.